18270396 has 36 divisors (see below), whose sum is σ = 46503184. Its totient is φ = 6048000.

The previous prime is 18270391. The next prime is 18270437. The reversal of 18270396 is 69307281.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 18270396.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18270391) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3756 + ... + 7116.

Almost surely, 2^18270396 is an apocalyptic number.

It is an amenable number.

18270396 is an abundant number, since it is smaller than the sum of its proper divisors (28232788).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18270396 is a wasteful number, since it uses less digits than its factorization.

18270396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3522 (or 3517 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 18270396 is about 4274.3883773003. The cubic root of 18270396 is about 263.3799152048.

The spelling of 18270396 in words is "eighteen million, two hundred seventy thousand, three hundred ninety-six".